| ( | 10 | + | 80 | x | ÷ | 71 | ) | ÷ | 3 10 | + | x | = | 1000 |
| Left side of the equation = | 10 | × | 10 3 | + | 80 | x | ÷ | 71 | × | 10 3 | + | x |
| = | 100 3 | + | 800 213 | x | + | x |
| = | 100 3 | + | 1013 213 | x |
100 3 | + | 1013 213 | x | = | 1000 |
1013 213 | x | = | 1000 | − | 100 3 |
1013 213 | x | = | 2900 3 |
| x | = | 2900 3 | ÷ | 1013 213 |
| = | 2900 3 | × | 213 1013 |
| = | 2900 | × | 71 1013 |
| x | = | 205900 1013 |
| x | = | 203.257651 |